In Yokohama's Minato Mirai, the Pretty Cures' victory over Fusion is the hottest subject of conversation! Girls everywhere who like the Pretty Cures are dressing up and acting as their favorite Cures. Only Ayumi Sakagami, the new transfer student, is by herself. Ayumi sees an odd monster on her way home from school. Ayumi and the creature became fast friends after dubbing it Fuu-chan. Nevertheless, Fuu-chan is a fragment of Fusion and possesses the power of darkness. In an effort to make Ayumi happy, Fuu-chan consumes all of Ayumi's dislikes, wreaking havoc at school and throughout the city! All 28 Pretty Cures were assembled once more in an effort to convey Ayumi's actual feelings to Fuu-chan. When everyone combines their strength, a miraculous light begins to shine.